Shoulder straps are adjustable bands designed to support and secure items, commonly found on bags, backpacks, and some clothing. They distribute weight evenly across the shoulders, making it easier to carry heavy loads without causing strain. These straps can be made from various materials, including nylon, leather, or cotton, and often feature padding for added comfort. Some shoulder straps are removable or interchangeable, allowing users to customize their carrying experience based on their needs or preferences.